Why does Apple do nothing against illegal iPhone app piracy?

Kodex, I think Chrism and Riruilo are asking about how do companies detect if their app has been illegally downloaded. You answered that it's easy to do, and they are interested in knowing how. Or maybe I misunderstood them, but in any case I'm interested about it.

I'm not talking about contacting a lawyer, but about how to detect it from inside the app.

miq01 Wrote:Kodex, I think Chrism and Riruilo are asking about how do companies detect if their app has been illegally downloaded. You answered that it's easy to do, and they are interested in knowing how. Or maybe I misunderstood them, but in any case I'm interested about it.

I'm not talking about contacting a lawyer, but about how to detect it from inside the app.

Well, Kodex answered one of my questions (useful, thanks).
Any idea about the other one?
"how do companies detect if their app has been illegally downloaded"

I changed the name of this thread to reduce the amount of publicity a site like this has. The address is still in the thread posts, though... hope nobody minds too much. This thread is on the 4th page on google when searching for these guys, though, and our community does not exactly want to contribute to additional software piracy.